All B2C orders from the web enter Inform as Point of Sale orders with a deposit amount. If your company is not currently taking deposits from customers, you may need to set up your Point of Sale deposit account in your G/L Control Table: (Accounting > General Ledger > G/L Control Table). The Pos Deposit option should be linked to a liability G/L account for handling these deposits.
If the account is not present, you can create an account: Go to Accounting > General Ledger > G/L Account.